Hello all, A friend asked me to look at his old Powerbook-A1138 and as I usually fix Windows based machines, I figured it would be good practice. (as we now have 2 Macs in the the home, a Macbook Pro and a new Air) The issue seems to be whenever I physically connect the HDD to the motherboard the system freezes on boot: Grey screen on normal boot, freeze when booting to disc, freeze just before options appear on startup manager. I disconnect the cable and can boot to Startup Manager with the only obvious option of booting to the CD. Thinking the drive was dead I ran SpinRite on it via a USB to IDE adapter on another PC and it passed with no errors. I have also tried another random Seagate 120GB drive I pulled from a working Windows notebook and formatted to Mac Ext. (Journaled) using the MBP. I also thought maybe the SuperDrive was bad as it was making a lot of noise when accessing the discs, but even after replacing with another SuperDrive, same noises and nothing. I guess they're all loud. I've spent hours troubleshooting and not getting anywhere. I'm ready to start again at the beginning if need be. And there's nothing to restore or save, I'm just trying to get a clean system installed. I have original install discs and a Tiger DVD. I look forward to your help.